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dont recall expensive branchy func

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lizzie
2026-01-30 03:53:14 +00:00
committed by crueter
parent 6a5f86f201
commit 402fa3ae93
1 changed files with 9 additions and 14 deletions
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23
src/video_core/host_shaders/astc_decoder.comp
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@@ -856,19 +856,14 @@ uvec2 DecodeBlockSize(uint mode_layout, uint mode) {
}
}
uint DecodeMaxWeight(uint mode) {
const uint mode_layout = FindLayout(mode);
uint weight_index = (mode & 0x10) != 0 ? 1 : 0;
if (mode_layout < 5) {
weight_index |= (mode & 0x3) << 1;
} else {
weight_index |= (mode & 0xc) >> 1;
}
weight_index -= 2;
if ((mode_layout != 9) && ((mode & 0x200) != 0)) {
weight_index += 6;
}
return weight_index + 1;
uint DecodeMaxWeight(uint mode_layout, uint mode) {
const uint mode0_or = (mode & 0x3) << 1;
const uint mode5_or = (mode & 0xc) >> 1;
const uint cmp_moden = 0 - uint(mode_layout < 5);
const uint cmp_add6 = 0 - (uint(mode_layout != 9) & (mode >> 9) & 1);
return (((mode >> 4) & 1)
| (mode0_or & cmp_moden) | (mode5_or & ~cmp_moden))
+ (6 & cmp_add6) - 1;
}
void DecompressBlock(ivec3 coord) {
@@ -903,7 +898,7 @@ void DecompressBlock(ivec3 coord) {
base_cem = StreamBits(6);
}
const uint base_mode = base_cem & 3;
const uint max_weight = DecodeMaxWeight(mode);
const uint max_weight = DecodeMaxWeight(mode_layout, mode);
const uint weight_bits = GetPackedBitSize(size_params, dual_plane, max_weight);
const uint extra_cem_bits = base_mode > 0 ? ((0x85200 >> (num_partitions * 4)) & 0x0f) : 0;
const uint plane_selector_bits = dual_plane ? 2 : 0;